/*
 * Copyright 2013 nekdo.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cz.muni.fi.heathtow.web.validation;

import cz.muni.fi.heathrowapi.DestinationService;
import cz.muni.fi.heathrowapi.dto.DestinationDTO;
import java.util.List;
import org.apache.wicket.injection.Injector;
import org.apache.wicket.spring.injection.annot.SpringBean;
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidator;
import org.apache.wicket.validation.ValidationError;

/**
 *
 * @author Jan Richter
 */
public class UniqueDestinationCodeValidator implements IValidator<String>{
    @SpringBean(name="destinationService")
    private DestinationService destinationService;
    private Long ignoreId;
    private List<DestinationDTO> destinations;
    
    public UniqueDestinationCodeValidator() {
        Injector.get().inject(this);
        destinations = destinationService.findAll();
    }
    
    public UniqueDestinationCodeValidator(Long id) {
        Injector.get().inject(this);
        ignoreId = id;
        destinations = destinationService.findAll();
    }
    
    
    @Override
    public void validate(IValidatable<String> iv) {
        for(DestinationDTO destination : destinations){
            if(destination.getCode().equals(iv.getValue()) && !destination.getId().equals(ignoreId)){
                error(iv, "notUnique");
                break;
            }
        }
    }
    
    private void error(IValidatable<String> validatable, String errorKey) {
        ValidationError error = new ValidationError();
        error.addMessageKey(errorKey);
        validatable.error(error);
    }
}
